Retro85

Retro85, as the name suggests, is an Intel 8085 cpu emulator and simulator written in C++. It features a very intuitive and easy to use graphical application, a built-in debugger, assembly code editor and many other features.

The goal is to try as much as possible to emulate and implement all the aspects of the microprocessor. From the instruction set, to cpu cycles to io devices.

While the development of this software is solely for recreational purposes, I believe it can be used as a teaching tool for those who are not fortunate enough to own a physical training kit.

This app is still in development. In the meantime feel free to play around with it and give feedback.

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Tech stack

• C++
• dearimgui

Build and running

Open Developer Command Prompt for VS 2022 and Run:

• build_gui.bat to build the gui app

  • This will generate retro85.exe executable file

• build_cli.bat to build the cli app

  • This will generate retro85a.exe executable file that you can, for now, use to assemble and disassemble programs
  • Run retro85a.exe for help

Features / Road map / Ideas

• Code editor
• Step through code
• IO Drivers?
  • 'IO Devices' will be assigned a part of the memory where they'll be able to read and write
• Cross platform
  • Windows
  • Linux
  • MacOS
  • Web

I'm taking feature requests or ideas on how to make it better

Author

James Njenga

Feedback

If you have any feedback, please reach out to me via mail me at jnjenga.com

Contributing

Contributions are always welcome!